Abstract
AimTo report on Rabson–Mendenhall Syndrome (RMS) diagnosed in Kuwait. MethodsA toddler (18 months old) was referred with high plasma insulin and dysmorphic features suggestive of RMS including coarse facial features with globular nose, full lips and furrowed tongue. His skin was hyperkeratotic with hypertrichosis. His sister (aged 13.5 years) was diagnosed with diabetes at 9 years of age and treated with metformin and insulin. She presented with similar dysmorphic features, extensive acanthosis nigricans, dental abnormalities and bilateral nephrocalcinosis. The children were born to non-consanguineous parents. Blood samples were sent for genetic testing in a reference laboratory. ResultsBoth children were found to be homozygous for the p.Arg141Trp missense variant (p.Arg114Trp if numbered according to pro-receptor sequence) in the alpha subunit of the insulin receptor. ConclusionsThese cases demonstrate the importance of raising awareness among healthcare professionals to ensure rapid referral of patients with characteristic physical features of RMS and severe insulin resistance for genetic testing. Unfortunately, treatment of RMS patients remains a challenge with poor prognosis and short life expectancy usually caused by diabetes-related complications. Genetic testing confirms the diagnosis and allows informed genetic counseling of parents considering future pregnancies.
Published Version
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